U.S. Marine Staff Sgt. Jose Mireles, left, and Staff

U.S. Marine Staff Sgt. Jose Mireles, left, and Staff Sgt. Josue Deleon demonstrate sword manual for a Corporals Course class aboard the USS Anchorage (LPD 23) in the South China Sea, June 13, 2015. Both Mireles and Deleon are members of Battalion Landing Team 3rd Battalion, 1st Marine Regiment, 15th Marine Expeditionary Unit, and faculty advisors for the Corporals Course aboard the USS Anchorage. Marines participate in corporals courses, even while deployed, to ensure they have the tools to be better leaders. (U.S. Marine Corps photo by Sgt. Steve H. Lopez/Released)